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1 /*- |
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2 * Copyright (c) 2004 Joerg Sonnenberger <joerg@bec.de> |
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3 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> |
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4 * All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions |
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8 * are met: |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * 2. Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in the |
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13 * documentation and/or other materials provided with the distribution. |
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14 * |
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15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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25 * SUCH DAMAGE. |
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26 * |
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27 * $FreeBSD: src/usr.sbin/jexec/jexec.c,v 1.2 2003/07/04 19:14:27 bmilekic Exp $ |
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28 * $DragonFly: src/usr.sbin/jexec/jexec.c,v 1.1 2005/01/31 22:29:59 joerg Exp $ |
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29 */ |
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30 |
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31 #include <sys/param.h> |
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32 #include <sys/jail.h> |
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33 |
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34 #include <err.h> |
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35 #include <errno.h> |
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36 #include <stdio.h> |
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37 #include <stdlib.h> |
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38 #include <unistd.h> |
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39 |
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40 static int getjailid(const char *str); |
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41 static void usage(void); |
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42 |
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43 int |
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44 main(int argc, char **argv) |
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45 { |
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46 int jid; |
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47 |
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48 if (argc < 3) |
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49 usage(); |
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50 jid = getjailid(argv[1]); |
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51 if (jail_attach(jid) == -1) |
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52 err(1, "jail_attach(%d) failed", jid); |
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53 if (chdir("/") == -1) |
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54 err(1, "chdir(\"/\") failed"); |
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55 if (execvp(argv[2], argv + 2) == -1) |
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56 err(1, "execvp(%s) failed", argv[2]); |
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57 exit(0); |
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58 } |
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59 |
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60 static void |
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61 usage(void) |
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62 { |
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63 fprintf(stderr, "usage: jexec jid command [...]\n"); |
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64 exit(1); |
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65 } |
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66 |
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67 static int |
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68 getjailid(const char *str) |
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69 { |
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70 long v; |
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71 char *ep; |
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72 |
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73 errno = 0; |
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74 v = strtol(str, &ep, 10); |
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75 if (v < INT_MIN || v > INT_MAX || errno == ERANGE) |
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76 errc(1, ERANGE, "invalid jail id", str); |
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77 if (ep == str || *ep != '\0') |
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78 errx(1, "cannot parse jail id: %s.", str); |
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79 |
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80 return((int)(v)); |
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81 } |
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82 |